Thread: Corsa C Van + Atom + Gentoo Linux + 9" Capacitive touchscreen

Testing on desk - Installing Gentoo

Working on my TV with wireless desktop. Using USB-stick for temporary wifi access.
I will add detailed info about the install when it's done, now pictures:

I didn't had a smaller display in my room


A little messy, but working

Custom 9" capacitive touchscreen - Part 1

Plan

Replace the old CCFL backlight of a cheap TFT with automatically adjustable LED backlight ,
and add a capacitive touchscreen to it.

Ingredients

9" tesco value 12V vga screen, made in china


3M capacitive touchscreen with usb controller from ebay ($39)


LEDs, with an adjustable circuit (in progress)

Part 1

So, first, I stripped my "reasonably priced" screen a bit, removing some parts:
-the case
-speakers
-the high-voltage backlight panel

Stripped


Then I realized, that I don't need the front panel with the remote infra led and the buttons
Also, I taken apart the TFT panel, and removed the backlight (and temporary, the filter/mirror sheets under it)

Now, we are going somewhere...


So, now i have the TFT with it's circuit, the controller panel, and a panel for the connectors.

The energy consumption of the screen was 13-14W with the backlight.
Now, without it, it's almost nothing (<1W), and it's still viewable (a bit) in low-light conditions.

TODO next time:
-Remove the connector panel, and attach 12V and 15 pin d-sub to the controller directly.
-Maybe remove unnecessary from the panel (TV-tuner, AV-in)
-Add LED backlight
-Fit the touchscreen on the TFT
-Make a new case for the TFT with the new backlight and sheets
-Make a manually adjustable backlight circuit to test
-Make an automatic backlight circuit (adjusting the luminance depending on light conditions)

Cool. So what apps or front end you installing on Gentoo?

No apps, no frontend
I'm using linux in my project because:
a) I'm a gentoo geek
b) I want performance
c) I want custom UI and programs that satisfy my needs

My needs are:
-Audio (using the pc as a DSP)
-GPS
-maybe OBDII info

Setup
Simple minimal Xorg setup, USE flags staring with "-*"
Using ICC as compiler where possible.

Window manager/frontend
I start off from DWM code, and add
multitouch gestures, an audio player integration, and a wine integration (for Igo8) to it.

When it will be safe & stable, i'll release it to the community.

Phase 1
Install a basic gentoo system, test the WM, optimize, remove things that will be
a problem later for the SSD (disable swap, portage in tmpfs, etc).
Strip programs used for testing/compatibility.
Make a documentation of the system.
Test it in the car 'til it works.
Backup (this is the backup for upgrading the system)

Phase 2
The finalized installation will contain alot of garbage.
(unneded programs, config files, gcc, portage, source code, distfiles)

So I need to strip/reinstall the whole thing with the final config files and programs.
Backup (this is the system restore backup)

Phase 3
Disconnect the HDD, connect SDD, copy backup on it.
Set /etc/fstab and others to live happily with the SSD.
Put it in the car.

Originally Posted by simplex

No apps, no frontend
I'm using linux in my project because:
a) I'm a gentoo geek
b) I want performance
c) I want custom UI and programs that satisfy my needs

My needs are:
-Audio (using the pc as a DSP)
-GPS
-maybe OBDII info

Setup
Simple minimal Xorg setup, USE flags staring with "-* minimal"
Using ICC as compiler where possible.

Window manager/frontend
I start off from DWM code, and add
multitouch gestures, an audio player integration, and a wine integration (for Igo8) to it.

When it will be safe & stable, i'll release it to the community.

Phase 1
Install a basic gentoo system, test the WM, optimize, remove things that will be
a problem later for the SSD (disable swap, portage in tmpfs, etc).
Strip programs used for testing/compatibility.
Make a documentation of the system.
Test it in the car 'til it works.
Backup (this is the backup for upgrading the system)

Phase 2
The finalized installation will contain alot of garbage.
(unneded programs, config files, gcc, portage, source code, distfiles)

So I need to strip/reinstall the whole thing with the final config files and programs.
Backup (this is the system restore backup)

Phase 3
Disconnect the HDD, connect SDD, copy backup on it.
Set /etc/fstab and others to live happily with the SSD.
Put it in the car.

Gentoo is good. I've used it in the past. As far as I'm concerned Redhat,Gentoo or Debian work well for me. It's nice to see more LINUX users in here. Although I feel like a traitor using Windows 7 this time in my project.

Gentoo is like women.
Altough she looks very simple to use, she can bite your head off for the smallest mistake.
The mistakes of the past will come up in the worst moment, suddenly
And, it doesn't matter how you deal with her, softly or hard,
her reaction will be total random

latest example: forgot to add xml USE flag for python, didn't give a ***** about
the warning (there were no blinking red lights or something like that), system ruined

Windows 7 is nice, I'm using it on my laptop (I need MS stuff for my work).

Originally Posted by simplex

Gentoo is like women.
Altough she looks very simple to use, she can bite your head off for the smallest mistake.
The mistakes of the past will come up in the worst moment, suddenly
And, it doesn't matter how you deal with her, softly or hard,
she's reaction will be total random

latest example: forgot to add xml USE flag for python, didn't give a ***** about
the warning (there were noblinking red lights or something like that), system ruined

Windows 7 is nice, I'm using it on my laptop (I need MS stuff for my work).

Good comment -- got a laugh out of me (at the metaphor, not the tragedy).

Going with your sig, "My english is crappy, please correct me ", I'll make one correction: change "she's reaction will be total random" to "her reaction will be totally random".

And one comment: your english is far from crappy. Good job, overall.

Originally Posted by simplex

Gentoo is like women.
Altough she looks very simple to use, she can bite your head off for the smallest mistake.
The mistakes of the past will come up in the worst moment, suddenly
And, it doesn't matter how you deal with her, softly or hard,
she's reaction will be total random

latest example: forgot to add xml USE flag for python, didn't give a ***** about
the warning (there were noblinking red lights or something like that), system ruined

Windows 7 is nice, I'm using it on my laptop (I need MS stuff for my work).

LOL! Funny. Yeah gotta be careful with the USE flags.

Originally Posted by rdholtz

Good comment -- got a laugh out of me (at the metaphor, not the tragedy).

Going with your sig, "My english is crappy, please correct me ", I'll make one correction: change "she's reaction will be total random" to "her reaction will be totally random".

And one comment: your english is far from crappy. Good job, overall.

Corrected, thank you